National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Fair

70°F

21°C

Humidity 36%
Wind Speed Calm
Barometer 30.57 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 22 Aug 10:15 am MDT
Extended Forecast for

Arapahoe Peak CO

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 60. South wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

    High: 60 °F

    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 44. Breezy, with a west wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    T-storms then
    Slight Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 57. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph.

    High: 57 °F

    Breezy.
    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44. Breezy, with a west wind around 16 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. Breezy, with a west wind 8 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 56 °F

    Mostly Sunny
    and Breezy
    then Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.

    Low: 41 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely after noon. Partly sunny, with a high near 54. Chance of precipitation is 70%.

    High: 54 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 60. South wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 44. Breezy, with a west wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 57. Breezy, with a west wind 18 to 23 mph, with gusts as high as 36 mph.
Sunday Night
Partly cloudy, with a low around 44. Breezy, with a west wind around 16 mph, with gusts as high as 25 mph.
Monday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. Breezy, with a west wind 8 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.
Tuesday
Showers and thunderstorms likely after noon. Partly sunny, with a high near 54. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 55.
Wednesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 41. Breezy.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 56. Breezy.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 57. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe Peak CO
 40.02°N 105.65°W (Elev. 12680 ft)
Last Update:
2:15 am MDT Aug 22, 2026
Forecast Valid:
10am MDT Aug 22, 2026-6pm MDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation